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UNITED STATES PATENT OEEICE.y

THEODORE L. KAUFFER AND JAMES SERSON, OF BOSTON, MASSACHU- SETTS 5 SAID KAUFFER ASSIGNOR OF PART INTEREST TO VILLIAM B.

S. GAY, OF SAME PLACE.

GALVANIC BATTERY.

SPECIFICATION forming part of Letters Patent No. 279,872, dated June 19, 1883,

Application filed December 18, 1882. (No model.) u

To a/ZZ whomvlt may concern.'

Be it known that we, THEODORE L. KAUF- EER, a citizen of the United States, and JAMES SERsoN, a subject of the Queen of Great Britain, both residing at Boston, in the county of Suffolk and Commonwealth of Massachusetts, have invented certain new and useful Improvements in Galvanic Batteries, of which the following is a specification.

Our invention relates especially to improvements in the mechanical construction of galspective view of a battery embodying our iu vention. Fig. 2 is a vertical section through the center of the same.

A is the outer jar, B, the semieircular earbon plate, having a suitable binding-screw for connecting purposes, attached to the top 5 O, a perforated porous cell having a flange, c; D, a porous cell having the flange d. E is an eight-faced zinc plate, having a suitable binding-screw vfor connecting purposes. E is the positive electrode, and B the negative electrode.

In the bottom of the outer cell, A, we put bichromate of potash in crystals, care being taken that the crystals do not come in contact with the perforated cell C. We also partially iill the cell A with dilute sulphuric acid and bichromate of potasli. In the lforous cup D we place free mercury, and also dilute sulphurc acid. The zinc plate E is carefully amalgamated before it is placed in the porous cup D, and a continued amalgamation is kept up bythe Contact 0f the zinc with the free mercury. The outer cell may be niade of glass,

porcelain, earthenware, .or other suitable materials. The perforated porous cup C is made with the flange c, which enables the cup to be suspended, while the flange also acts as a cover. The porous cup D has the flange d, which also performs the same functions as the flange C. The flange d is placed a little below the top of the cup, that the top maybe utilized as a han- ,dle in removing or replacing the cup.

Ve find that, when the crystallized bichroA mate of potash comes in contact with the porous cup O, upon its outer side is deposited material which soon weakens and prevents the action of the battery. We have by suspending the cell O obviated this objection. The manner and the elements of which our battery is composed afford an action of equal strength andlong continuance. The ease with which any cell may be removed and replaced is of great advantage.

Ve are aware that bichromate of potash and sulphuric acid have been used in galvanic batteries, but not in the proportions and manner named in this specification.

XVe claim as our invention- 1. The combination, in a galvanic battery, of an outer cell, the perforated cell O, provided with the flange c, the porous cell D, pro- 7l vided with the lia-nge d, electrodes, and appropriate fluids, substantially as described.

2. In a galvanic battery, the perforated cell C, having the liange c, whereby the cell is suspended and a cover formed, as shown'and de- 8 scribed.

3. In a galvanic battery, the porous cell D, having the flange d, whereby the cell is suspended and a cover formed, as shown and described. 8

In witness whereof we have hereunto set ou hands.

THEODORE L. KAUFFER.

JAMES SERSON.

Vitnesses:

WM. B. H. Dowsn, GEO. Z. ADAMs. 

